Which dust sensor do you use and why?

[alexsh1]

@vladimir The answer is it depends. If you are happy with +/- 40% error, you probably be better of with a generic dust sensor. I think the best would be if you do a bit of research online. This is would be a good start - http://aqicn.org/sensor/

Personally, I moved from a cheap sensor to Plantower PMS7003 (about $23). The amount of time one spends in calibrating and understanding cheap sensors, is just not worth it in my view.

[vladimir]

@alexsh1 Plantower PMS7003 this sensor need not be calibrated? Is it accurate enough?
Unfortunately I have some problems with understanding English.:confused:
My GP2Y1014AU0F sensor now shows a value of about 150 units. As I understand, this is absolutely not the right value for the apartment.

[alexsh1]

@vladimir можно на русском и в личку ;))

[vladimir]

@alexsh1 :smile: :+1:
Wrote in the chat.

[NeverDie]

I just now hooked up the PMS5003. Incredibly easy. Regarding the OP, it says the particles in my living rooms are:
Concentration Units (standard)
PM 1.0: 5 PM 2.5: 8 PM 10: 8

Concentration Units (environmental)
PM 1.0: 5 PM 2.5: 8 PM 10: 8

Particles > 0.3um / 0.1L air:894
Particles > 0.5um / 0.1L air:286
Particles > 1.0um / 0.1L air:61
Particles > 2.5um / 0.1L air:2
Particles > 5.0um / 0.1L air:0
Particles > 10.0 um / 0.1L air:0

The above is from using the Adafruit library.

I don't see how the PM numbers can be right though. I mean the particles >5.um is 0, yet the PM10 is 8. How does that make sense?

[NeverDie]

Hmm.. Looks like the Honeywell may not provide the actual particle counts, but just the PM number? If so, that makes for a much coarser measurement. Also, interfacing to the Honeywell is a bit more involved. You have to request measurements. They don't just arrive on their own.

[Nca78]

@neverdie said in Which dust sensor do you use and why?:

Hmm.. Looks like the Honeywell may not provide the actual particle counts, but just the PM number? If so, that makes for a much coarser measurement. Also, interfacing to the Honeywell is a bit more involved. You have to request measurements. They don't just arrive on their own.

They should, by default it's supposed to send measurements at regular intervals.

[korttoma]

@neverdie

Just received an Plantower PMS5003 allso, do you have a "MySensors" sketch that you could share?

[NeverDie]

@korttoma I haven't connected it to mysensors. At present, I'm just using it to explore emissions from my 3d printer and how best to filter them.

[gohan]

@korttoma if you have a library that can read the values from the sensor, you can easily add the mysensors code

[korttoma]

@gohan said in Which dust sensor do you use and why?:

@korttoma if you have a library that can read the values from the sensor, you can easily add the mysensors code

yeah I know, I just thought that if @NeverDie already made a MySensors sketch I would not have to invent the wheel again.

@NeverDie what lib are you using and how? I2C?

[NeverDie]

@korttoma Adafruit library. It communicates over UART.